diff -r 745e8426a348 -r 5cf0b529afca test/db_test_base.py
--- a/test/db_test_base.py	Fri May 20 19:29:16 2016 +0300
+++ b/test/db_test_base.py	Fri Jun 03 18:14:08 2016 +0300
@@ -22,7 +22,7 @@
 
 import pytest
 from roundup.hyperdb import String, Password, Link, Multilink, Date, \
-    Interval, DatabaseError, Boolean, Number, Node
+    Interval, DatabaseError, Boolean, Number, Node, Integer
 from roundup.mailer import Mailer
 from roundup import date, password, init, instance, configuration, \
     roundupdb, i18n
@@ -82,7 +82,7 @@
     priority.setkey("name")
     user = module.Class(db, "user", username=String(), password=Password(),
         assignable=Boolean(), age=Number(), roles=String(), address=String(),
-        supervisor=Link('user'),realname=String())
+        rating=Integer(), supervisor=Link('user'),realname=String())
     user.setkey("username")
     file = module.FileClass(db, "file", name=String(), type=String(),
         comment=String(indexme="yes"), fooz=Password())
@@ -534,6 +534,25 @@
         self.db.user.set(nid, age=None)
         self.assertEqual(self.db.user.get(nid, "age"), None)
 
+    # Integer
+    def testIntegerChange(self):
+        nid = self.db.user.create(username='foo', rating=100)
+        self.assertEqual(100, self.db.user.get(nid, 'rating'))
+        self.db.user.set(nid, rating=300)
+        self.assertNotEqual(self.db.user.get(nid, 'rating'), 100)
+        self.db.user.set(nid, rating=-1)
+        self.assertEqual(self.db.user.get(nid, 'rating'), -1)
+        self.db.user.set(nid, rating=0)
+        self.assertEqual(self.db.user.get(nid, 'rating'), 0)
+
+        nid = self.db.user.create(username='bar', rating=0)
+        self.assertEqual(self.db.user.get(nid, 'rating'), 0)
+
+    def testIntegerUnset(self):
+        nid = self.db.user.create(username='foo', rating=1)
+        self.db.user.set(nid, rating=None)
+        self.assertEqual(self.db.user.get(nid, "rating"), None)
+
     # Password
     def testPasswordChange(self):
         x = password.Password('x')
diff -r 745e8426a348 -r 5cf0b529afca test/test_cgi.py
--- a/test/test_cgi.py	Fri May 20 19:29:16 2016 +0300
+++ b/test/test_cgi.py	Fri Jun 03 18:14:08 2016 +0300
@@ -99,9 +99,10 @@
 
         test = self.instance.backend.Class(self.db, "test",
             string=hyperdb.String(), number=hyperdb.Number(),
-            boolean=hyperdb.Boolean(), link=hyperdb.Link('test'),
-            multilink=hyperdb.Multilink('test'), date=hyperdb.Date(),
-            messages=hyperdb.Multilink('msg'), interval=hyperdb.Interval())
+            intval=hyperdb.Integer(), boolean=hyperdb.Boolean(),
+            link=hyperdb.Link('test'), multilink=hyperdb.Multilink('test'),
+            date=hyperdb.Date(), messages=hyperdb.Multilink('msg'),
+            interval=hyperdb.Interval())
 
         # compile the labels re
         classes = '|'.join(self.db.classes.keys())
@@ -588,6 +589,62 @@
             self.fail('number "no" raised "required missing"')
 
     #
+    # Integer
+    #
+    def testEmptyInteger(self):
+        self.assertEqual(self.parseForm({'intval': ''}),
+            ({('test', None): {}}, []))
+        self.assertEqual(self.parseForm({'intval': ' '}),
+            ({('test', None): {}}, []))
+        self.assertRaises(FormError, self.parseForm, {'intval': ['', '']})
+
+    def testInvalidInteger(self):
+        self.assertRaises(FormError, self.parseForm, {'intval': 'hi, mum!'})
+
+    def testSetInteger(self):
+        self.assertEqual(self.parseForm({'intval': '1'}),
+            ({('test', None): {'intval': 1}}, []))
+        self.assertEqual(self.parseForm({'intval': '0'}),
+            ({('test', None): {'intval': 0}}, []))
+        self.assertEqual(self.parseForm({'intval': '\n0\n'}),
+            ({('test', None): {'intval': 0}}, []))
+
+    def testSetIntegerReplaceOne(self):
+        nodeid = self.db.test.create(intval=1)
+        self.assertEqual(self.parseForm({'intval': '1'}, 'test', nodeid),
+            ({('test', nodeid): {}}, []))
+        self.assertEqual(self.parseForm({'intval': '0'}, 'test', nodeid),
+            ({('test', nodeid): {'intval': 0}}, []))
+
+    def testSetIntegerReplaceZero(self):
+        nodeid = self.db.test.create(intval=0)
+        self.assertEqual(self.parseForm({'intval': '0'}, 'test', nodeid),
+            ({('test', nodeid): {}}, []))
+
+    def testSetIntegerReplaceNone(self):
+        nodeid = self.db.test.create()
+        self.assertEqual(self.parseForm({'intval': '0'}, 'test', nodeid),
+            ({('test', nodeid): {'intval': 0}}, []))
+        self.assertEqual(self.parseForm({'intval': '1'}, 'test', nodeid),
+            ({('test', nodeid): {'intval': 1}}, []))
+
+    def testEmptyIntegerSet(self):
+        nodeid = self.db.test.create(intval=0)
+        self.assertEqual(self.parseForm({'intval': ''}, 'test', nodeid),
+            ({('test', nodeid): {'intval': None}}, []))
+        nodeid = self.db.test.create(intval=1)
+        self.assertEqual(self.parseForm({'intval': ' '}, 'test', nodeid),
+            ({('test', nodeid): {'intval': None}}, []))
+
+    def testRequiredInteger(self):
+        self.assertRaises(FormError, self.parseForm, {'intval': '',
+            ':required': 'intval'})
+        try:
+            self.parseForm({'intval': '0', ':required': 'intval'})
+        except FormError:
+            self.fail('intval "no" raised "required missing"')
+
+    #
     # Date
     #
     def testEmptyDate(self):
diff -r 745e8426a348 -r 5cf0b529afca test/test_hyperdbvals.py
--- a/test/test_hyperdbvals.py	Fri May 20 19:29:16 2016 +0300
+++ b/test/test_hyperdbvals.py	Fri Jun 03 18:14:08 2016 +0300
@@ -18,6 +18,7 @@
         return {
             'string': hyperdb.String(),
             'number': hyperdb.Number(),
+            'integer': hyperdb.Integer(),
             'boolean': hyperdb.Boolean(),
             'password': hyperdb.Password(),
             'date': hyperdb.Date(),
@@ -63,8 +64,12 @@
         self.assertEqual(self._test('string', '  a string '), 'a string')
     def testNumber(self):
         self.assertEqual(self._test('password', ''), None)
-        self.assertEqual(self._test('number', '  10 '), 10)
+        self.assertEqual(self._test('number', '  1 '), 1)
         self.assertEqual(self._test('number', '  1.5 '), 1.5)
+    def testInteger(self):
+        self.assertEqual(self._test('password', ''), None)
+        self.assertEqual(self._test('integer', '  100 '), 100)
+        self.assertEqual(self._test('integer', '  -100 '), -100)
     def testBoolean(self):
         self.assertEqual(self._test('password', ''), None)
         for true in 'yes true on 1'.split():
diff -r 745e8426a348 -r 5cf0b529afca test/test_templating.py
--- a/test/test_templating.py	Fri May 20 19:29:16 2016 +0300
+++ b/test/test_templating.py	Fri Jun 03 18:14:08 2016 +0300
@@ -263,6 +263,11 @@
     def __int__(self):
     def __float__(self):
 
+class IntegerHTMLProperty(HTMLProperty):
+    def plain(self):
+    def field(self, size = 30):
+    def __int__(self):
+
 class BooleanHTMLProperty(HTMLProperty):
     def plain(self):
     def field(self):